KVPY SX SB Exam 2016 Question Paper

Question : 6 of 120

Marks: +1, -0

Let O = (0, 0) ; let A and B be points respectively on x-axis and y-axis such that ∠OBA = 60º. Let D be a point in the first quadrant such that OAD is an equilateral triangle. Then the slope of DB is -

$√3$
$√2$
$1/√2$
$1/√3$

Validate

Solution:

\M_\BD=1/√3

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